You go no longer than 4 hours between feedings during the day and 6 hours at night.

Strictly following these rules might be difficult, so if you're not able to do so, choose another form of birth control to prevent pregnancy.

If you can follow these guidelines, you will still need to choose another form of birth control once your baby turns 6 months old. Some forms of birth control can decrease your milk supply, so ask your health care provider which options are best for you.